Thanks kreed.

My friend has a 93' with 572 talldecks/700's hp with Imco 1.5 standard lengths running 26 4 blades. He has hit 85 at about 5800 running around the chesapeake bay.

What part of the Bay?

I will chime in here,the first post was realy good lots of info,anyway I have 540s said to be 625hp,don't have any dino sheets,turning a 26p b1 tweaked to 27pitch,labbed on b 1 drives can hit 80 on gpsat 5500 to 5600rpm,to go even 5 mph more its going to take a lot more hp